Maintenance work on the ZORA database servers is scheduled for Thursday 25th July 2019 from 19:00-20:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Biljecki, Filip; Stoter, Jantien; Ledoux, Hugo; Zlatanova, Sisi; Cöltekin, Arzu (2015). Applications of 3D city models: state of the art review. ISPRS International Journal of Geo-Information, 4(4):2842-2889.